Red Bull co-owner Mark Mateschitz reportedly wants Christian Horner to leave the company ‘quickly’ amid the ongoing investigation process. Mateschitz owns 49 per cent of shares in the energy drinks company but majority shareholder Chalerm Yoovidhya, who owns 51 per cent, is said to still be backing the team principal. Horner is expected to learn his fate by the end of Wednesday after he denied allegations of inappropriate behaviour towards a female colleague. The saga is widely expected to reach a conclusion before the first Formula One race of the season at the Bahrain Grand Prix this weekend…